amend: add noise in extra to avoid creating obsolescence cycle (
issue3664)
Obsolescence cycle are bad and should be avoided as much as possible. The
current amend implemented touch changeset meta data as few as possible. This
make is easy for amend to result in the same node than a precursors. We add some
deterministic noise in extra to avoid this. In practice, the hex of the amended
changeset is stored in 'amend_source' extra key.
$ "$TESTDIR/hghave" inotify || exit 80
$ echo "[extensions]" >> $HGRCPATH
$ echo "inotify=" >> $HGRCPATH
$ p="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
$ hg init $p
$ cd $p
fail
$ ln -sf doesnotexist .hg/inotify.sock
$ hg st
abort: inotify-server: cannot start: .hg/inotify.sock is a broken symlink
inotify-client: could not start inotify server: child process failed to start
$ hg inserve
abort: inotify-server: cannot start: .hg/inotify.sock is a broken symlink
[255]
$ rm .hg/inotify.sock
inserve
$ hg inserve -d --pid-file=hg.pid
$ cat hg.pid >> "$DAEMON_PIDS"
status
$ hg status
? hg.pid
if we try to start twice the server, make sure we get a correct error
$ hg inserve -d --pid-file=hg2.pid
abort: inotify-server: cannot start: socket is already bound
abort: child process failed to start
[255]
$ kill `cat hg.pid`
$ cd ..